package cn.lili.modules.system.serviceimpl;

import cn.hutool.core.util.StrUtil;
import cn.lili.common.enums.ResultCode;
import cn.lili.common.enums.SwitchEnum;
import cn.lili.common.exception.ServiceException;
import cn.lili.modules.system.entity.dos.Logistics;
import cn.lili.modules.system.entity.dos.Setting;
import cn.lili.modules.system.entity.dto.KuaidiSetting;
import cn.lili.modules.system.entity.enums.SettingEnum;
import cn.lili.modules.system.entity.vo.Traces;
import cn.lili.modules.system.mapper.LogisticsMapper;
import cn.lili.modules.system.service.LogisticsService;
import cn.lili.modules.system.service.SettingService;
import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.google.gson.Gson;
import groovy.util.logging.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 物流公司业务层实现
 *
 * @author Chopper
 * @since 2020/11/17 8:02 下午
 */
@Slf4j
@Service
public class LogisticsServiceImpl extends ServiceImpl<LogisticsMapper, Logistics> implements LogisticsService {
	@Autowired
	private SettingService settingService;

	@Override
	public Traces getLogistic(String logisticsId, String logisticsNo) {
		try {
			return getOrderTracesByJson(logisticsId, logisticsNo);
		} catch (Exception e) {
			log.error("获取物流公司错误", e);

		}
		return null;
	}

	@Override
	public List<Logistics> getOpenLogistics() {
		LambdaQueryWrapper<Logistics> queryWrapper = new LambdaQueryWrapper<>();
		queryWrapper.eq(Logistics::getDisabled, SwitchEnum.OPEN.name());
		return this.list(queryWrapper);
	}

	/**
	 * 获取物流信息
	 *
	 * @param logisticsId
	 *            物流公司ID
	 * @param expNo
	 *            物流单号
	 * @return 物流信息
	 * @throws Exception
	 */
	private Traces getOrderTracesByJson(String logisticsId, String expNo) throws Exception {
		Setting setting = settingService.get(SettingEnum.KUAIDI_SETTING.name());
		if (StrUtil.isBlank(setting.getSettingValue())) {
			throw new ServiceException(ResultCode.LOGISTICS_NOT_SETTING);
		}
		KuaidiSetting kuaidiSetting = new Gson().fromJson(setting.getSettingValue(), KuaidiSetting.class);

		// ID
		String EBusinessID = kuaidiSetting.getEbusinessID();

		// KEY
		String AppKey = kuaidiSetting.getAppKey();

		// 请求url
		String ReqURL = kuaidiSetting.getReqURL();

		Logistics logistics = this.getById(logisticsId);

		if (logistics != null) {
			String requestData = "{'OrderCode':'','CustomerName':'3601','ShipperCode':'" + logistics.getCode()
					+ "','LogisticCode':'" + expNo + "'}";
			Map<String, String> params = new HashMap<String, String>(8);
			params.put("RequestData", urlEncoder(requestData, "UTF-8"));
			params.put("EBusinessID", EBusinessID);
			params.put("RequestType", "1002");
			String dataSign = encrypt(requestData, AppKey, "UTF-8");
			params.put("DataSign", urlEncoder(dataSign, "UTF-8"));
			params.put("DataType", "2");

			String result = sendPost(ReqURL, params);
			Map map = (Map) JSON.parse(result);
			return new Traces(logistics.getName(), expNo, (List<Map>) map.get("Traces"));
		}
		return null;
	}

	/**
	 * MD5加密
	 *
	 * @param str
	 *            内容
	 * @param charset
	 *            编码方式
	 * @throws Exception
	 */
	@SuppressWarnings("unused")
	private String MD5(String str, String charset) throws Exception {
		MessageDigest md = MessageDigest.getInstance("MD5");
		md.update(str.getBytes(charset));
		byte[] result = md.digest();
		StringBuffer sb = new StringBuffer(32);
		for (int i = 0; i < result.length; i++) {
			int val = result[i] & 0xff;
			if (val <= 0xf) {
				sb.append("0");
			}
			sb.append(Integer.toHexString(val));
		}
		return sb.toString().toLowerCase();
	}

	/**
	 * base64编码
	 *
	 * @param str
	 *            内容
	 * @param charset
	 *            编码方式di
	 * @throws UnsupportedEncodingException
	 */
	private String base64(String str, String charset) throws UnsupportedEncodingException {
		String encoded = base64Encode(str.getBytes(charset));
		return encoded;
	}

	@SuppressWarnings("unused")
	private String urlEncoder(String str, String charset) throws UnsupportedEncodingException {
		String result = URLEncoder.encode(str, charset);
		return result;
	}

	/**
	 * 电商Sign签名生成
	 *
	 * @param content
	 *            内容
	 * @param keyValue
	 *            Appkey
	 * @param charset
	 *            编码方式
	 * @return DataSign签名
	 * @throws UnsupportedEncodingException
	 *             ,Exception
	 */
	@SuppressWarnings("unused")
	private String encrypt(String content, String keyValue, String charset) throws Exception {
		if (keyValue != null) {
			return base64(MD5(content + keyValue, charset), charset);
		}
		return base64(MD5(content, charset), charset);
	}

	/**
	 * 向指定 URL 发送POST方法的请求
	 *
	 * @param url
	 *            发送请求的 URL
	 * @param params
	 *            请求的参数集合
	 * @return 远程资源的响应结果
	 */
	@SuppressWarnings("unused")
	private String sendPost(String url, Map<String, String> params) {
		OutputStreamWriter out = null;
		BufferedReader in = null;
		StringBuilder result = new StringBuilder();
		try {
			URL realUrl = new URL(url);
			HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
			// 发送POST请求必须设置如下两行
			conn.setDoOutput(true);
			conn.setDoInput(true);
			// POST方法
			conn.setRequestMethod("POST");
			// 设置通用的请求属性
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
			conn.connect();
			// 获取URLConnection对象对应的输出流
			out = new OutputStreamWriter(conn.getOutputStream(), StandardCharsets.UTF_8);
			// 发送请求参数
			if (params != null) {
				StringBuilder param = new StringBuilder();
				for (Map.Entry<String, String> entry : params.entrySet()) {
					if (param.length() > 0) {
						param.append("&");
					}
					param.append(entry.getKey());
					param.append("=");
					param.append(entry.getValue());
				}
				out.write(param.toString());
			}
			// flush输出流的缓冲
			out.flush();
			// 定义BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(conn.getInputStream(), StandardCharsets.UTF_8));
			String line;
			while ((line = in.readLine()) != null) {
				result.append(line);
			}
		} catch (Exception e) {
			log.error("向指定 URL 发送POST方法的请求错误", e);
		}
		// 使用finally块来关闭输出流、输入流
		finally {
			try {
				if (out != null) {
					out.close();
				}
				if (in != null) {
					in.close();
				}
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
		return result.toString();
	}

	private static final char[] BASE64_ENCODE_CHARS = new char[]{'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K',
			'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
			'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0',
			'1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'};

	public static String base64Encode(byte[] data) {
		StringBuffer sb = new StringBuffer();
		int len = data.length;
		int i = 0;
		int b1, b2, b3;
		while (i < len) {
			b1 = data[i++] & 0xff;
			if (i == len) {
				sb.append(BASE64_ENCODE_CHARS[b1 >>> 2]);
				sb.append(BASE64_ENCODE_CHARS[(b1 & 0x3) << 4]);
				sb.append("==");
				break;
			}
			b2 = data[i++] & 0xff;
			if (i == len) {
				sb.append(BASE64_ENCODE_CHARS[b1 >>> 2]);
				sb.append(BASE64_ENCODE_CHARS[((b1 & 0x03) << 4) | ((b2 & 0xf0) >>> 4)]);
				sb.append(BASE64_ENCODE_CHARS[(b2 & 0x0f) << 2]);
				sb.append("=");
				break;
			}
			b3 = data[i++] & 0xff;
			sb.append(BASE64_ENCODE_CHARS[b1 >>> 2]);
			sb.append(BASE64_ENCODE_CHARS[((b1 & 0x03) << 4) | ((b2 & 0xf0) >>> 4)]);
			sb.append(BASE64_ENCODE_CHARS[((b2 & 0x0f) << 2) | ((b3 & 0xc0) >>> 6)]);
			sb.append(BASE64_ENCODE_CHARS[b3 & 0x3f]);
		}
		return sb.toString();
	}

}
